chart 連接 fft

[EdwinAAA]

我已經有一個自己POLT 出來的chart 但吾可以好像Simulate Signal 駁入FFT 裏，如何可以把自己的chart 駁入FFT 裏？？

[SmilingPhil]

可以麻煩您以正體中文再說明一次問題嗎？另外，方便的話請提供您程式的block diagram以利釐清問題成因。謝謝！

[EdwinAAA]

How to use the XY GRAPH to connect FFT??

THX ^^

[EdwinAAA]

Sorry! Re-upload the vi

[Billingsley]

X Y Graph 需要很多的 ( Xn, Yn ), n = 0,1,2,3,4....etc

所以如果您的輸入不是上述的座標，當然無法顯示

[EdwinAAA]

Thank you ^^

I can connect the XY graph , but I can't connect the FFT. How to do it ?? THX

[SmilingPhil]

Hi EdwinAAA,

The reason why you got broken wires is that the Spectral Measurement express VI only takes "waveform" datatype as input. I guess you confused "XY Graph" with "Waveform Graph," please refer to the following tutorials:

Waveform Graph: http://www.labviewpro.net/teach_content.php?fid=6&post=307&fpt=5

XY Grpah: http://www.labviewpro.net/teach_content.php?fid=6&post=308&fpt=5

To solve your problem, the function "Build Waveform" is helpful. Below is how I utilized it:

The Result: Have a look at the upright "Waveform Graph"

Hope the above information is useful. Please come back and keep us posted. 

Thanks,

Phil

[EdwinAAA]

Hi, SmilingPhil,

Big Big thank you for your help. The information is very useful.

However, the waveform graph of the vector is not the integer. Can you help me. THX THX ~~~~